Make sure that your payments are no more than 25-33% of your take home pay.

Day one of the job he outsourced demo and boom no more kitchens or bathrooms.

DTI no more than 43%.  

I've started seeing some recommendations around using Land Trusts as a way to acquire your properties and then use no more than 2 LLCs to complete the Asset strategy picture here.

If there is any surplus left then you can claim that surplus and you as a 2nd mortgage get wiped out by the foreclosure (meaning after foreclosure there is no more 2nd mortgage on the property) but if there is any funds left in court registry from the surplus you can claim it as a lien holder.A different scenario you might want to think if you are buying 2nd note that is in default:  Bring first mortgage current (as a 2nd position note holder you can do that), then start your own foreclosure and the faster you get to the auction block better it is for you as you might get paid at the auction if there is equity left in the property.

So no more state tax deductions, property tax deductions etc?

You’ll need 2 years of stable income with no more than six months between jobs.

If so $25k to $30k per door and no more. 

I would take meticulous notes and documentation of ALL the issues...dates etc etc.... and not renew her lease.At the MINIMUM I would give her an ultimatum ....no more conflicts with the neighbors...no more late or partial payments....no issues with maintenance of the property....and make her M2MAnd the model tenants should just go about their business and ignore the lower tenant

If you choose to leave a small balance i would suggest no more than 30% of your total limit.